Fire-door.



vM. GILMORE.

FIRE DOOR.

APPLICATION FILED JUNE15. 1914.

Patentedfuly 27, 1.915.v

2 SHEETS-SHEET 2.

Tye/5585 Wwf 6" www.

Uiwimii ofi To afl 'whom t muy conce/m i Be 1t known that i, ifji-f`iiocitizen of the United Stones, :m

the following is a 'uii, dem; cc l exact dcscripiont eifcrciycc had. icthe acccmpmiying drawings, :oiiiiiiig pmi of this specification,

This invention rciaes to iic coml 'more especially concerned with Y*causing a, corici. operation miem@ fm: doors.

In apparatus of dass, a no-n--combiis tiblc Shuter or c'iistain iscaused io cios@ fronti of an opmiug in tine iifiin, A as a door, Winoiagoi: thc iiiim when V02",- determined 'empaiaiire iiiicolip'c ci: dangercondition me 'been icaciicd.. quircments foi succcssifui fevicc voi kindYare @Xtromciy Severe. 'iiic must be in a condition oi fcadiiicss 11 Y.4times and musi: respond coiiccflj/ t dition for which it has been i" ioperate might be attended 'wi-h 'che g consequences and is obvious thai,oiii structuro of absciutc ieiaoiii'y be. i empioycd. This 012255 ofapparatus I used except undo-z" emergency coi' l.protection agains iiro@iid {osi-ors' a. f'aso il Ahe line 21-2 of Fig. i, g Fig. 3 is a side.'tlon of the ic door as viewed iioi'xi c mi;

sense oseclirity m is hoifcisy Worsc han useless.

, One of the objects of the prossimi: inw-miic@ is to provide anautomatic lzc oor of im Ipro've construction which will embody "Lo amaximum degree thc quaiies of ielisibi.j in action, simplicity andruggcnos Another object is to provid@ an aotomic fire door which maybecasiy and iemiy sci and which will. beposit've in opciaioii.

In the accompanying Circaingsx igmsf is a front elevation, with partskicken away; of a fire door ciibodying mjy' ini/initio showing thesti'cctmc ajppii (i to fiom# c way; Fig. 2 is a crocs-section of if samaon of? the casio w,

os of siicii mow in guide-si tcff on l dos of ic mici :Miron L3 is o@ ,12G :imi .is to -hc 'inside of Ags am?. serve not w f We? odge of thc(surta-im "l the desiifc 'hiomos so that;

*1, The chanlll lll?

The channel har 25 .is made only of such length as to tit closely withinthe door opening. The tension of the spring 7 so adjusted as to retainthe channel member in firn contact with the upper edge 2S of the openingand it is desired to nnroll the shatter it necessary overcome thetension oil: the spring 7. flhis is accomplished hy means of a weight.Tl har 30 which li'ornis the weight for lowering the shutter is adaptedto he dropped into the channel 27 of the har and is or' sullicientweight to close the shutter. 'lhe har 3l) is normally raised fromContact with the channel, and is suspended from the shaft- ?l by meansof hooks 3Q attacl :d to the har` and lugs or arms 33 riveted to theshaft. lt can he seen in Fig. l that rotation of the shailft ill willrelease the har 30 and cause it to drop into the channel Il', Theweighty of the har is snllicient to close the shutter.

n arm 3l attached to the outer endv olf the shalt 3l and is normallyheld in raised position, as shown in Fig. 3, to support the har 30. Ahell cranli lever 36 mounted on a plate '37 attached to the outside etthe casinol normally supports the weighted end Billet the lever 'lf heother end of the hell crank lever is attached to wire 38 which containsfusible portions or links 40. The wire 38 is looped through an eye llattached to lj-he end of the casing l5 to insure that the pull of thewire 38 will he at right angles to the arm and bell crank lever rlheouter end of the wire 3S may he attached to any fixed point as lhe endsof 'the bar 30 projecl; beyond lhe end of the channel memher 25 intomideways 4:3 and l on the sides of the opening or doorway. The gunleways21, 'and lll, ll arc'lormed of a compound structure ot' angle hars. Thehars l5- and lo are placed with one. side thereof against the wall andbetween the two parallel upstanding,f {lange-s` the llanges of anglohars ll and 'i8 are secured. This compound structure is held togeiher byrivets and is bolted or otherwise 'fastened to the edge ol the doorwayor opening. The compound har is ot' considerable rigidity and stillnessand serres to guide the curtain or shutter and to prereit auY leakage ofair or 2gases past the shutter `when the same is in the lower or closedposition.

lflexihle wire rahles 5l) and :il are secured to brackets 52 and 5?mounled in the upper ends of the ruidcways -l and La respectively'. 'lhcwire, 'cable ML as shown in his'. l, eitends the. l'ull length ol' the.zguiileway and at (he hottom thereol' the cahle is 'passed to the.outside ol the compound har and fastened hy suitable tension means.I'lhe har 3U is apertureil at both ends to rccoirc the cables 5l) and 5lwhich torni flexihle guides for the har 30. llandles 5l are attached tothe har 2O at the bottom of the shutter to provide ready means forraising theshntter after the saine has been lowered.

The operation of the device is as follows: When the lire door is set theparts are in the positions shown in Fig. l. Upon the attainment of asnlliciently high temperature to fuse the links lll, the hell cranklever 3G will he released and will, in turn, release the weighted lever34 attached to the shaft The droppingI of the end 39 of the lever 34rotates the shaft 3l .nuliciently to disengage :the arms 32, 33, andthereby to release the har 30.

The 'har 30 then drops into the channel :'27 ol" the channel bar Q5 andovercomes the tension of the spring 7 causing the shutter to unwind fromthe. drum 6 andfall to the lower position, the channel 25 and the anglebar Q3 sealing' the opening at the bottom and the guideways 21, 22sealing the opening around the edges or' the shutter. rThe top of thedoorway is closed by the casing 15, and thus the doornf'ay is' entirelysealed. To open the shutter the same may be raised hy means of thehandle 5l and it is necessary to litt only the difference in Weightbetween the tension of the spring 7 and the weight of the har 30. Whenthe door has been raised to the upper position, it is necessary torelieve the channel 25 of the weight of the har 2l() or the shutterwould innnediatel y drop when released. This is ac comlilished byraising the arm 34 to the position shown in the figures. As the shaft 3lis rotated hy raising the arm 3l. the lugs 33 will engage the hookedarms 32 on the ha r il() and will support the. weight thereof as long asthe arm l-l is held in a raised posi tion. lfhe action of the cables 50and 5l is important in this comiection as it allows a twisting ot thehar .30 while 'the saine is he;

ingF raised without the necessity of any lost motion in the guide, Thesecables, being;r flexible. do not cause any binding action and will allowthe, har il() to he angularly displaced as is necessari7 when the lug;33

brought into engagement with the arin 32 to.

raise theI har 30. similar action is ol tained when the weightisi-dropped. 'lle guiding* cables insure lhat. the wcilghtwill l'allwithin the channel 2 and will not accidentally roll sidcwise' hereby itwould he impossible, lor the lues lil to engage the arms 3Q when it isdesired to set the shutter. The tension on the Cables 50 and 5l may hesecured in any preferred manner.

lt will at once he seen that a structure of great simplicity has beenprovided, and at the same timer absolutereliability of operation issecured. rlhere. is no opportunity lor one end ol the liar 3() to hedropped ahead of the other and even if the saine should occur, theguiding cables 50 and 51 Iwould prevent any binding' or wcdging offfohl'.

n weil as; holding the shu 1' ai modifications ).veig'ht, said moans'ami a guido :hawaii the bai' against he @ge The function, o' tha Chamidis in iis Lipper posiion,

casing l5 against tho enti# the propel' distance from ih@ hai' 30, i';amo sai'Yes as seaiing; member foi' the ootom of the Shut toi* when thoShiitoi' is in iis iovfel' osinon.

it is obvious ihat any deraigemon, o" ih@ appai'aiigis will make'ilbseif apparent by tho lowering' of the shutezf. Thus s'iring shoilidweaken or become broken h@ Shutgorwouid drop of its own WeF-'hh Ereaking of he wir@ or of tho ie'fois 36 ami 3 would cause tho bai* 30 iodrop an@ dos@ fh@ shuor. roppi'ng of he bai 30 dohvess a slight biow tothe shutte and overcomes any ohdonoy the parte; to stick, such as mightvhe caused by rust, paint? or the like.

The proseni inveniion an imiovenieni, of the Struouro invoated ma adshown in Fatemi No. LUlaiS gi'anod Novomho i, 1913.

Whiio my invoniioa has been @ascribed with i'eerenoo so tha dotaiis ofcons'ziuonioh v of a ooi-tain eilibommont, i?, not inehded thereby, iiiany nimmer, to'ihai the invon tion, it is doar that the same may heemployed iii ohvi stiiioiiiies and zo iations ami may be subio-43', tonumerous appaienb to "those skiiiod in. the art, all of whioh comewithin spiri and scopo of my invonioa.

Vhat daim as new ami ilesire to separe both omis of Said. weibii, sL i@shaf weasing said weight iipoa a, pari-iai 'otaion hui'oof, a guide ioinsure coi'i'ooi': ozigagement of the weight wh said shutoi', and moansto hold said sha agains roation.

2. in apparaiis of the oiass loam-Used, a mmoomhlis'ihie shiitoi'normaiiy heid i raised position, a Channel ii'aaiiooi' aai wi to saidshator, a suspmaai weight aflai to be. i'oieasefl and to slop iam Lici): i to move the shatoi o iov-31- pai' on means foi' sus ing saiC-ampz'iaiiiii a 'rotaa Die shaft. having; a ph hooks o'fi said weightfoi' or;

3. in apparatus o dosoiiho, a noncoiiiiaistihie icxihio shiiio horfnaiiyhold ia a raised positionj :.:haaaoi mambo? attached to ho hotoia ofQai` shutor, a, wei-ht adapted m im iioiigaaii iai@ said -haiiz1oi 'noi'faaso he doa io mow io h wor position, :me-,ans o i'aisosaiai woigh;from said cha'anei, said moans Compirisiig ouyer 65 arms ou sai .Lwoight, a i'o wh-1o shaft, arms' of said bi1 i and a gioia@ aemoor ohoid X In said aighty in paaiion to causo Said cui-vof 7G arms io beengagea' by bho arms om said Shaft in apparaais of the Sosoliibed si.weight having a phiai hooks attached hoi'oto, a guido i guifiig saiioi75 weight7 a oatabe xavig piu- 'aiiy of amig for' ammonia with sai "aidhooas ar C gamen?, io support sai@ i i 1 p, ,acl sam sha against :a inappaiaius of me dass des ihed, a aieai har having hook ajaan, o .1 ,L y"r arm 8a sai tached hoisto a ioiazabio si a` a m miapa to mgm@ whensai-S yahaf is i'ot toi., r i sabios pagssingg hioagh aiioiiu'a. of saidbai and foi'iiingg a yid; foi' alii hai', ah ami means io hohl :mini amiin ifa'iae position for i'otaiuiag ho arms on gagoiiont wih said ciu've.arms. v

' appai'a'us of ho dass fisso?? ofi, a iai having aciiii'ef arm maar:each roof, a, rotata'oe ing asms adapted o ong: saiii Curva( a ms whensaid sha' is voi-amd. p uio gaio@ 'MEG the @ms o? io-ii, a.

with said hai' aad mixing engago Saiii hooiifi to .Laigispo moans; tohoi@ said i'oaah rotazioi En oom'iihamanj iloA spying miler supportingsaid shuttem ai Hangs on the and of said shutter, a im): serving as aweight to move sai shutter T250 the closed position against action ofsaid spring roller, a rotatable shaft parallel to Said bar :and havinglugs for engaging' said Weight to support the same, and means io holdsaidiiaft against rot-ation.

bi winoss Whsreof, I hereunto subscribe MILLARD GILMORE. iinesses r E.KALL, VJ. GERVAIS.

